Investigation on the origin of the blue emission in titanium doped sapphire: Is F+color center the blue emission center?
作者:
Wei Chen,
Honggao Tang,
Chaoshu Shi,
Jie Deng,
Junyan Shi,
Yinxue Zhou,
Shangda Xia,
Yuxia Wang,
Shaotang Yin,
期刊:
Applied Physics Letters
(AIP Available online 1995)
卷期:
Volume 67,
issue 3
页码: 317-319
ISSN:0003-6951
年代: 1995
DOI:10.1063/1.115430
出版商: AIP
数据来源: AIP
摘要:
Titanium doped sapphire (Ti:Al2O3) shows a 420 nm blue emission band whose corresponding excitation band lies at 244 nm. With the aim of ascertaining the origin of this blue emission, using synchrotron radiation we measured the vacuum ultraviolet to ultraviolet absorption spectrum of titanium doped sapphire. It is suggested that the blue emission is due to a center other than a trivalent Ti3+ion or a tetravalent Ti4+ion, most probably an F+‐type color center formed in the crystal. ©1995 American Institute of Physics.
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